Biologia 69/9: 1202—1209, 2014 Section Zoology DOI: 10.2478/s11756-014-0423-3 Geographic distributions, host plants and biology of species in the genus Huequenia (Coleoptera: Cerambycidae), with new records from Southwestern Argentina Paola N. Turienzo &OsvaldoR.Di Iorio Entomología, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, 4◦ Piso, Pabellón II, (CP 1428) Ciudad Universitaria, Buenos Aires, Argentina; e-mail: [email protected] Abstract: Araucaria trees as host plants of the longhorned beetle Huequenia livida (Coleoptera: Cerambycidae) in Argentina are reviewed. Araucaria araucana is its natural host plant in SW Argentina, but the larvae also developed in dead branches of A. angustifolia and A. bidwillii (new host plant records), when both plants were kept in the same rearing cage with the natural host plant. Pinus contorta var. murrayana, also mentioned from Argentina, may be a recently adopted secondary host. A winter and a summer generation of H. livida was documented for the first time. Huequenia livida exceeds the actual natural distribution of A. araucana following the distribution of cultivated A. araucana and Pinus trees. Key words: Araucaria araucana;stemborer;Huequenia; Achrysonini; South America. Introduction caria muelleri (Carr.) Brong. et Griseb. (Mecke 2004b), Araucaria cunninghamii Aiton ex Don (Hawkeswood The longhorned beetle Compsa livida Germain, 1898 1990, 1992), and Araucaria heterophylla (Salisb.) Fran- (Coleoptera: Cerambycidae) was described from Chile. co (Hawkeswood 1992). Later it was transferred to the new genus Xenocompsa In this paper, a bibliographic review is presented, Martins, 1965 (Cerambycinae: Ibidionini) by Martins with corrections and new locality records for species (1965), and again to the new genus Angolia Cerda, 1980 in the genus Huequenia, together with emergence data (Cerambycinae: Hesperophanini). A second species in from host plants. It is established here for the first time this last genus was described (Angolia araucana Cerda, that H. livida is a bivoltine species with two generations 1980). As Angolia Cerda, 1980 was preoccupied by per year, one large generation in autumn-winter, and a Angolia Malloch, 1934 (Diptera), the new name Hue- short one in summer. quenia was proposed by Cerda (1986). Huequenia was transferred from Hesperophanini to Achrysonini (Ce- rambycinae) by Martins (2002), who mentioned both Material and methods species only from Chile. Until 2005, the genus Huequenia was not men- Known localities and host plants of Huequenia sp. per local- tioned from Argentina (Di Iorio 2005). Turienzo (2005) ity are summarized in order to locate both in the composite map of the geographic distribution of the insect-host plant published the first record for Huequenia livida (Coleo- associations (Fig. 1). ptera: Cerambycidae) from Argentina, together with Dead branches of Araucaria araucana with signs of the first known host plant from this country. Larval infestation by Cerambycidae (Figs 2, 3, 5) were collected tunnels and pupal chambers of H. livida were described at three localities in Neuquén province, Argentina (Supple- by Turienzo (2006). Villacide et al. (2005, 2006) also mentary file: Table S1). These dead branches were located recorded H. livida from Argentina, but in a different in old living trees cultivated inside public squares in ur- host plant, and Gómez (2008) mentioned three species ban areas (Figs 2, 3), and they were infested with active of Pinus as its host plants, without more details. larvae or emerging adults inside the pupal chambers. The Araucaria trees are known as host plants of branches were maintained in rearing cages made of mesh H. livida in Argentina. Some works have been made wire at ambient temperature to avoid interference with the natural conditions of emergences in the field. about extant Araucaria-insect associations, related Dead branches of Araucaria angustifolia and Araucaria to Araucaria angustifolia (Bertol.) Kuntze (Pastrana bidwillii, obtained from cultivated trees in the province of 1950; Mecke et al. 2000a,b, 2001, 2004a, b; Mecke Buenos Aires, were kept with A. araucana in the same & Galileo 2004), Araucaria araucana (Molina) Koch rearing cages in laboratory (Buenos Aires, Ciudad Uni- (Hodge 1997; Turienzo 2005, 2006; Ferrer et al. 2007), versitaria). After checking ovipositions in these additional Araucaria laubenfelsii Corbas (Mecke 2004b), Arau- branches, they were later transferred separately to rearing Unauthenticated c 2014 Institute of Zoology, Slovak Academy of Sciences Download Date | 1/12/18 9:01 PM Geographic distributions, host plants and biology of Huequenia 1203 Fig. 1. Current distributions of Araucaria araucana (dark green areas, modified from Echeverría et al. 2004) and Huequenia livida: red circles, localities where H. livida were reared and/or observed on A. araucana (literature data and author’s records); light green circle, locality where H. livida was recorded on Pinus contorta var. murrayana; blue circles, localities where specimens of H. livida were captured (examined from entomological collections and literature data); Aa-Ab, found on A. angustifolia and A. bidwilli (Chile: Santiago); black squares, transported specimens. cages until new adults emerged (Supplementary file: Ta- MPFA, Museo Provincial “Florentino Ameghino”, Santa ble S2). Emergences were recorded daily (Supplementary Fe, Argentina. file: Tables S1, S2), with the numbers of specimens emerged SNSA, Servicio Nacional de Sanidad Animal, Buenos Aires, in each date in parentheses. Each specimen (Supplementary Argentina. file: Tables S1, S2) was labelled with locality and date of ZFNE, Zoología Forestal, Universidad Nacional del Com- field collection of the host plant, and a smaller, second label ahue, San Martín de los Andes, Neuquén, Argentina. with the host plant and emergence data. Plant names and abbreviations of authors are according to Wiersema & León (1999). Results Collections mentioned in literature (not examined) Subfamily Cerambycinae Latreille, 1804 Achrysonini Lacordaire, 1869 BTCC, Barriga Tu˜nón Enrique collection, Curicó, Chile. Huequenia araucana (Cerda, 1980) CMCC, Cerda Miguel collection, Chile [currently MNHN]. See historic taxonomy and bibliographic references in EIIB, Ecología de Insectos, INTA Bariloche, Río Negro, Monné (2001: 10) except: Huequenia araucana:Martins Argentina. 2002: 62 [key], 64 [distr.; re-descr.; refs.] MNHN, Museo Nacional de Historia Natural, Santiago, Chile. Known geographic distribution MZSP, Museu de Zoologia, Universidade de S˜ao Paulo, S˜ao CHILE: Malleco (Cerda 1986): Nahuelbuta National Paulo, Brazil. Park, 7-I-1966, M. Cerda leg., 1 male holotype [CMCC], PLSC,Pe˜na Luis collection, Santiago, Chile [Cerambycidae currently in MZSP]. 17 ex. paratypes [CMCC] (Cerda 1980; Martins 2002), 2 ex. paratypes [PLSC] (Cerda 1980); Nahuelbuta, II- Collections examined 1953, L. Pe˜na leg., 1 ¾ [DZUP], I-1966, M. Cerda leg., ¾ 2 [DZUP], II-1968, M. Cerda leg., 1 [DZUP], I- DIOC, Di Iorio Osvaldo collection, Buenos Aires, Ar- 1976, M. Cerda leg., 2 [DZUP], I-1978, M. Cerda ¾¾ gentina. leg., 3 ,2 [DZUP], XII-1983, M. Cerda leg., 1 Unauthenticated Download Date | 1/12/18 9:01 PM 1204 P.N. Turienzo &O.R.Di Iorio ¾ [DZUP] (Martins 2002); Caramávida, 10-XI-1956, 3 Known host plants paratypes [PLSC] (Cerda 1980; Martins 2002); Llon- Araucaria araucana quimay, Galletué, 3-I-1962, L. Pe˜na leg., 2 paratypes CHILE: uble: Agricultural School of Chillán, A. Be- [PLSC] (Cerda 1980; Martins 2002); Arauco: Pichi- soaín leg., in dead trees of an avenue (Porter [1921] nahuel (Cordillera de Nahuelbuta), I-1959, Dirings leg., 1922a), = Chillán (Durán M. 1963, following Porter ¾ 3 ,1 [DZUP] (Martins 2002). [1921] 1922a, 1922b); Malleco: Cordillera de Tolhuaca ¾ [type locality], 1 ,1 , beating dry branches (Ger- Known host plants main 1898; Cerda 1980), 2 syntypes [MNHN] (Mar- Araucaria araucana tins 2002); Angol, 30-XI, D.S. Bullock leg., 3 CHILE: “it was found only in Araucaria araucana [MZSP], labeled “en Araucaria imbricata”(Martins where it develops” [translated from Spanish] (Cerda 2002); Cautín: Temuco, R.E. Baquedano leg., pupae 1980; Martins 2002); Malleco: Nahuelbuta National inside pupal chambers (Porter [1921] 1922a 1922b), Park, 37◦47 S, 73◦00 W, 12-II-2005, J.E. Barriga leg., = “cordillera de Cautín” (Durán M. 1963, follow- # 169587, 1 ex. [BTCC], “fogging s/ Araucaria arau- ing Porter [1921] 1922a, b); (Duffy 1960, following cana” [printed label], “Huequenia / araucana /(Cerda, Porter 1922a, dated 1923); (Cerda 1980); (Monné 1980) / det: JE Barriga” [printed label], extracted from 2001); ARGENTINA: Neuquén: San Martín de los http://www.coleoptera-neotropical.org/paginas/ Andes, 10-I-2005, P. Turienzo & O. Di Iorio leg, in 3 familias/CERAMBYCIDAE/chile/ Huequenia- basal dead branches on living trees (Turienzo 2005 araucana.html (accessed 20.09.2012). 2006). Remarks. According to Martins (2002), H. araucana Araucaria angustifolia can be characterized by the prothorax without lat- CHILE: Metropolitan Region: in dead wood (Bar- eral tubercles; the pronotum without smooth areas; the riga et al. 1993); (Martins 2002); Santiago, spec- hairless vertex, scape pronotum and elytra; its smaller imens in MNHN, on dead branches (Villacide et size (7.4–7.8 mm total length). In contrast, H. livida al. 2006); Talagante: Naltagua, I-1993, J.E. Barriga has lateral tubercles in the prothorax; pronotum with leg., # 40213, 1 ex. [BTCC], “ex / Araucaria / a small central area